Adjustable guide.



H. J. MITCHELL.

ADJUSTABLE GUIDE.

APPLICATION TILED JUNE 8, 1912.

1,1 1 3,464. Patente d Oct. 13; 1914.

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ADJUSTABLE GUIDE.

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UNITED STATES PATENTIOFFICE.

HARRISON J. MITCHELL, or BELOIT, WISCONSIN, ASSIGNOR. Io THE BERLIN MACHINE WORKS, or BELOIT, wIscoNsIN, A ooaroaArIoN or w sooNsIN.

ADJUSTABLE GUIDE. 7

' Specification of Letters Patent.

Application filed June 8, 1912. Serial No. 702,397.

To all whom it may concern:

Be it known that I, HARRISON J. Mrrorn ELL, a citizen of the United States, residing at Beloit, in the county of Rock and State of Wisconsin, have invented certain new and useful Improvements in Adjustable Guides, of which the following is a specification.

My invention pertains to guides for planers and analogous wood or metal working machines and has for its object the provision of means whereby the guide may be quickly, accurately and securely adjusted to difierent positions relative to the bed. It is necessary in machines ofthis type to frequently change the position of the guide to meet the demands of I Wider or narrower work and it is important to be able to effect such change of position both quickly and accurately, to gage, and also to securely position the guide to prevent subsequent shifting. Having these conditions and requirements in view, my invention resides in the constructional features, arrangement and combination of parts hereinafter described and illustrated by way of example, and ,par-

ticularly set forth in the appended claims.

In the drawings, consisting of a diagrammatic showing of a planer and'its guide,

Figure 1 is a top plan view of the bed and guide. Fig. 2 is a longitudinal vertical section through the parts shown in Fig. 1, showing also the feed rolls and planing cylinders. Fig. 3 is a fragmentary longitudinal vertical section upon a larger scale through the medial portion of Fig. 1. Figs. 4 and 5 show in plan and longitudinal vertical section respectively upon an enlarged scale the left hand portion of Fig. 1, and Figs. 6 and 7 are views similar to 4 and 5, but showing the right hand portion of Fig. 1.

Having reference to the drawings, 11 designates the bed plate of a planer shown in this case as composed of a number of sections 11 11, 11, and 11, as viewed longitudinally providing gaps or interspaces 12, 13 and 14, the gap 12 coinciding with and accommodating the upper periphery of a planing cylinder 15, a second planer cylinder 16 being disposed above the bed slightly in advance of the gap 12. The gaps 13 and 14in a similar manner accommodate the lower feed rolls 17 and 18 above which, I

and coacting therewith, are disposed the pressure feed rolls l9 and 20, the arrange- Patented Oct. 13, 1914.

ment and f o of which parts a e old and well known in this art. The bed sections 11?, 11 and 11, are provided attheir ends with laterally spaced pairs of slots 21, 22, 23 and 24, having their inner end walls vertical sothat the end walls of a pair of slots of a given section upwardly diverge as shown in Fig. 2. The series of pairs of slots, 21', 22, 23, and 24, are laterally spaced a;predeterm1ned uniform distance and the 25 undercut at opposite inclinationsto the pairs of the several sections are in longitu I dinal alinement so as to serve as positioning dBVlCBS or gages for the ad ustment of the guide laterally of the bed.

The guide 26 is shown as composed. of a continuous plate extending the full length of the bed and formed along its inner side has a straight edge 27 against which the work rests and is guided in its passage through the machine. ries of clamping devices is provided, the

A longitudinal semembers of which are adapted severally to engage within the alined pairs of slots to position the guide against shifting and also against vertical displacement. I have shown in Figs. 1 and 2 threedifferent kinds of clamps particularly adapted for use inthe relation and combinationshown. In the left hand portion of Figs. ,1 and 2, and

shown upon alarger scale in, Figs. 4 and 5, it will be ,seenrthat the pair of clamps coacting with the bed plate, section 11' comprise dissimilar members, one a fixed stud 28,having a claw 29 projecting downwardly from the under face ofthe guide and de- I flected laterally to. correspond to the inclined end wall 25 with fwhichit engages, and another member comprising a bolt30 extending downwardly below the under face of the guide into threaded engagement with L the block 31, having a vertical face 32 and an oblique face 33, said, block forming in effect upon the lower end of the bolt a claw,

the oblique face 33 of whichis adapted to engage the inclined face 25 at this end of {v the bed plate section. The under face of the bed plate at this point has also formed thereon an integral stud 34 engaging within a recess 35 and serving to initially position the guide plate with reference to the slot.

filler plate 36 is pivoted at 37 upon the upper face of the guide, this filler. plate having a lateral slot 38 adapted to take over. the shank of the bolt beneath the head 39, the pivotal mounting of the filler plate enabling the same to swing laterally into and out of said position beneath the head, a finger piece 40 being provided for this purpose.

At the medial portion of Figs. 1 and 2, shown also upon an enlarged scale in Fig. 3, a pair of clamps are provided composed of substantially identical members 41, 41, each of which is pivotally mounted upon trun nions 42, 42 journaled in the marginal ribs 43, 43, upstanding from the guide. Each of the clamp members 41 is likewise provided with a claw 44 extending downwardly through a slot 45 of the guide to a point below the under face of-the same and defiected to present, as in the former case, a vertically inclined face 46 adapted to cooperate with the inclined face 25 of the end wall of the slot 21. Above the upper face of the guide each of the clamp members is provided with a horizontal arm 47 overlying the upper face of the guide and supported therefrom. A set screw 48 is threaded within the terminal portion of this arm and adapted to hear at its lower end upon a filler plate 49 which is provided with a longitudinal guide slot 50 taking over a pin 51 by which latter the filler plate 49 is guided for limited reciprocatory movement to and from a position between the lower end of the set screw 48 and the upper face of the guide,

a finger piece 52 being provided for the manipulation of the filler plate.

At the right hand portion of Figs. 1 and 2, shown also in Figs. 6 and 7 upon an enlarged scale, a pair of clamps are used of which the members are dissimilar, the left hand member being a counterpart of the clamp members shown in Fig. 3 and the several parts being designated by corresponding reference numerals, while the right hand member differs from the other only in the mounting of the filler plate 53 which is pivoted at 54 to swing to and from a position beneath the lower end of the set screw 48.

Assuming the guide to be in the position shown in Figs- 1 and 2 and clamped to the bed by the engagement of its clamping members within the alined slots 21, and presupposing a desire to shift the same laterally a distance corresponding to the space separating the slots 21 and 22 the change is effected as follows: The set screws 48 and 54 are loosened slightly so as to release the filler plates 49 and 53, the plates 49 are thereupon shifted longitudinally and the filler plate 53 is swung from beneath the arms 47 of the clamps 41 which arms by gravity drop and thus cause the claws 44 to swing outwardly out of engagement with the inclined end walls 25 of the slots 21. Next the bolt 30 is slightly turned at the left hand end of the guide sufficiently to release the filler plate 36 which is swung laterally from beneath the head 39 of the bolt permitting the latter to drop and cause the claw 31 to disengage itself from the inclined end wall 25 of the slot 21. The guide plate is now disconnected from the bed plate and by shifting the same slightly to the right the claw 29 and the fixed clamp member 28 are brought out of engagement with the end wall of this slot and the guide may be lifted vertically out of the slots 21 and shifted laterally into the slots 22. It is thereupon shifted slightly to the left to bring the claw 29 of the clamp 28 into engagement with the wall 25 of the slot 22, the bolt 39 is lifted, the filler plate 36 swung beneath the head 39, the bolt 30 being then tightened as before to securely clamp the left hand endof the guide to the section 11 of the bed. The arms 47 of the several clamps 41 are then lifted to bring the claws 46 into engagement with the end walls 25 of the slots 22 and, the filler plates 49 and 53 having been brought to a position beneath the set screws 48, the latter are tightened to securely clamp the guide and bed in their medial portions. It will be observed that the guide is thus repositioned with absolute accuracy and securely, the operation taking but a short space of time.

While I have illustrated and described with a considerable degree of particularity the details of construction of desirable embodiments of the invention in order that the operation and advantages of the same might be clearly understood, yet the parts entering into the construction are subject tc modification in many particulars without departing from the invention or sacrificing its material advantages.

I claim 1. In a device of the character described, a bed plate, a guide plate extending longitudinally thereof, the bed plate provided with laterally spaced pairs of longitudinally alined slots, having undercut end walls oppositely inclined to the vertical, and clamps mounted on the guide plate and provided with claws engaging within the slots beneath the inclined walls thereof, substantially as described.

' 2. In a device of the character described, a bed plate, a guide plate, one of the plates provided with spaced pairs of slots having undercut end walls oppositely inclined to the vertical, a pair of clamps connecting the plates and comprising a fixed stud projecting from one of the plates and having a claw extending laterally at an inclination into engagement beneath the inclined wall of one of the slots of a pair, and a second clamp adjustably mounted on the same plate and having a claw engaging beneath the oppositely inclined Wall of the other one of the pair of slots, substantially as described.

3. In a device of the character described, a bed plate, a guide plate extending longitudinally thereof, the bed plate provided with laterally spaced pairs of slots having undercut end walls oppositely inclined to thevertical, a series of pairs of clamps mounted upon the guide plate and provided with claws engaging Within the slots beneath the inclined walls thereof, one pair of clamps comprising a fixed stud projecting beneath the guide plate and having a claw extending laterally at an inclination into engagement beneath the inclined wall of its slot, a bolt having threaded thereon a claw engaging beneath the oppositely inclined wall of its slot, substantially as described.

p 4. In a device of the character described, a bed-plate, a guide-plate, a dog on said guide-plate having an end adapted to engage a portion of the bed-plate, movable means on said guide-plate adapted to be shifted into and out of engagement with said dog and thereby control the adjustment of said dog with respect to said bed-plate, substantially as described. i

4 HARRISON J .'MITCHELL.

Witnesses: a v

F. A. HoR'rsMANN,

R. G. BALL.

Copies of this patent may be, obtained for five cents each, by addressing the Commissioner of I'atents,

Washington; D. C. 

